Relic Pleistocene Permafrost, Western Arctic, Canada

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Science  23 Jun 1972:
Vol. 176, Issue 4041, pp. 1321-1323
DOI: 10.1126/science.176.4041.1321


Icy layers and interbedded frozen sediments along the Arctic Coastal Plain of northwestern Canada have been subjected to glacial deformation. Radio-carbon dates indicate that the deformation took place more than 40,000 years ago.